What is Akari (Light Up)?

Akari is a Japanese logic puzzle where you place light bulbs on a grid. Bulbs illuminate their entire row and column until blocked by a black wall. The goal is to illuminate all white cells while following the numbered wall constraints.

How do numbered walls work in Akari?

Black cells with numbers (0-4) must have exactly that many light bulbs in the four adjacent cells (up, down, left, right). A wall numbered '3' needs exactly 3 adjacent bulbs.

What are the basic rules of Akari?

1) Click white cells to place or remove bulbs. 2) Bulbs illuminate their row and column until hitting a wall. 3) No two bulbs may illuminate each other. 4) Numbered walls must have the exact count of adjacent bulbs. 5) All white cells must be illuminated to win.

Is Akari difficult to learn?

Akari is easy to understand but challenging to master. Start with 7x7 grids and work up to 11x11. The key is logical deduction: bulbs cannot see each other, and numbered walls constrain placement.

Do all Akari puzzles have unique solutions?

A well-designed Akari puzzle has exactly one unique solution. All puzzles in this game are hand-crafted and solver-verified to ensure a single correct bulb placement for each puzzle.

Akari (Light Up) Puzzle — Free Online Logic Game

Level1

Time0:00

Bulbs0

Tier 1 — 7x7 EasyL1-L6

Tier 2 — 8x8 MediumL7-L12

Tier 3 — 9x9 HardL13-L18

Tier 4 — 10x10 ExpertL19-L24

Tier 5 — 11x11 MasterL25-L30

Akari

Puzzle Complete!

How to Play Akari